The oldest continuously operating fish market in the United States.

Largest Roman Catholic church in North America.

Daredevil repair workers can worm their way out the access hatch, loop ropes over the apex and rappel down the monument.

The Binghamton area is home to six of the last remaining hand-carved vintage carousels.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

Find out what it sounds like when doves cry at Prince's recording studio estate turned museum.

Half of a waterfall goes into the river while the other half seems to disappear.

The world's longest known cave system.

The seat of Buffalo government is a gorgeous Art Deco palace.

This two-room factory has been cranking out the musical signifier of zaniness for a century.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

One of Canada's most incredible rare book collections holds hundreds of thousands of gorgeous tomes that the general public can touch.

Secret Swing.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

Thousands of jack o'lanterns light up Halloween at this historic West Virginia home.

305 homemade stone stairs wind their way up the Hamilton escarpment.

This modern castle sat empty for decades before a fire inspired its builders to complete its luxury halls.

This Mediterranean castle was built for a millionaire and his giant dog.

Little island known for its massive beachfront "flowerpot" pillars.

The mysterious white squirrels of this Illinois city are treated like sacred cows.

An art deco ice cream shop covered in vintage train station tiles.

This collection of Japanese luck idols beckons visitors with over 2,000 waving paws.

Georges Seurat’s pointillist masterpiece has been recreated in Ohio in topiary form.

These enduring murals depicting a distinctly Marxist tribute to capitalism could not even be defeated by McCarthyism.